Frozen knee (adhesive capsulitis)

I have a year old D'Uccle bantam,"Ting" with no apparent injury,redness,swelling or infection, who will not put weight on her left foot. I took her to an avian vet who diagnosed her, but had no suggestions beyond anti-inflammatories,which I gave her, to no avail. She is still eating, but is obviously in pain, depressed and slightly puffed out. My regular vet is willing to give her laser acupuncture, but the initial visit will be $110, and subsequent ones $65 each , which would be a real hardship. She's still eating, but not doing well. Hoping for someone who has had and solved similar issues